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Python: Concatenate all elements in a list into a string

Python Basic: Exercise-27 with Solution

Write a Python program to concatenate all elements in a list into a string and return it.

Pictorial Presentation:

Concatenate all elements in a list into a string and return it

Sample Solution:-

Python Code:

def concatenate_list_data(list):
    result= ''
    for element in list:
        result += str(element)
    return result

print(concatenate_list_data([1, 5, 12, 2]))

Sample Output: 

15122

Flowchart:

Flowchart: Concatenate all elements in a list into a string and return it.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

 

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Next: Write a Python program to print out all even numbers from a given numbers list in the same order and stop the printing if any numbers that come after 237 in the sequence.

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m